A crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.54 m/s. The pulling force is 108 N parallel to the incline, which makes an angle of 21.0° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.96 m.
(a) How much work is done by the gravitational force on the crate?
J
(b) Determine the increase in internal energy of the crate-incline system owing to friction.
J
(c) How much work is done by the 108-N force on the crate?
J
(d) What is the change in kinetic energy of the crate?
J
(e) What is the speed of the crate after being pulled 4.96 m?
m/s